Re: [DIYbio] I'm currently working on changing the world!

On 3/24/19, John Griessen <john@industromatic.com> wrote:

> https://www.fynchbio.com/tutorials/2018/7/1/building-a-smart-sleeve-for-continuous-culture
>
> the heating resistor must be a real
> heater bolted on with heat transfer paste.

The part numbers for the manufacturer are given in their docs. 2x 20 ohm 1%
resistors 15W max in series and no thermal paste. The board
connector is shown in pics.
It is not possible to heat well using the power given to that board through
that connector with 1A max per pin. There is a thermistor in the
design but uncalibrated,
and taped to the tube.
The fan motor is for a magnet-stir setup, I dont think it is for air
flow. There is no need
to use a PCB for this functionality.

Skim the Nature publication.

Read the source code- it's not good either. (For the Nth time: No
one should use arduino in professional projects!)

This is the kind of system that an EE/ME undergrad team would throw
together over the summer break for fun, it is not publication-worthy
or innovative in any of its dimensions.

> I guess the hardware is easy to improve on.

No, I think the design and the publication is irresponsible, and it
should be ignored.
It's vaporware, it's hype, and the laws of physics are not possible to
violate regardless of
how nice the pictures look, or how many mentions of "3D printing" and
"DIY" there are.
It's not even price competitive, considering comments made here so far and the
system's reliance on laser-cut this and that.
Pretty much, the advisors and authors should not feel good about themselves
for this work.

-- Quote --

Author information

Author notes
Brandon G Wong & Christopher P Mancuso
These authors contributed equally to this work.
Affiliations
Biological Design Center, Boston University, Boston, Massachusetts, USA.
Brandon G Wong, Christopher P Mancuso, Szilvia Kiriakov & Ahmad S Khalil
Department of Biomedical Engineering, Boston University, Boston,
Massachusetts, USA.

Brandon G Wong, Christopher P Mancuso & Ahmad S Khalil
Program in Molecular Biology, Cell Biology and Biochemistry, Boston
University, Boston, Massachusetts, USA.
Szilvia Kiriakov
Department of Bioengineering, Rice University, Houston, Texas, USA.
Caleb J Bashor
Wyss Institute for Biologically Inspired Engineering, Harvard
University, Boston, Massachusetts, USA.
Ahmad S Khalil
Contributions
B.G.W., C.J.B., and A.S.K. conceived the study. B.G.W. developed the
system with guidance and input from all authors. B.G.W. and C.P.M.
performed and analyzed experiments. S.K. generated reagents. C.J.B.
and A.S.K. oversaw the study. All authors wrote the paper.


-- End Quote --

--
## Jonathan Cline
## jcline@ieee.org
## Mobile: +1-805-617-0223
########################

--
-- You received this message because you are subscribed to the Google Groups DIYbio group. To post to this group, send email to diybio@googlegroups.com. To unsubscribe from this group, send email to diybio+unsubscribe@googlegroups.com. For more options, visit this group at https://groups.google.com/d/forum/diybio?hl=en
Learn more at www.diybio.org
---
You received this message because you are subscribed to the Google Groups "DIYbio" group.
To unsubscribe from this group and stop receiving emails from it, send an email to diybio+unsubscribe@googlegroups.com.
To post to this group, send email to diybio@googlegroups.com.
Visit this group at https://groups.google.com/group/diybio.
To view this discussion on the web visit https://groups.google.com/d/msgid/diybio/CAAhtNQtewwrOzRueguSS7dzH9M24ULHq68hE0h5WKow_V7s16A%40mail.gmail.com.
For more options, visit https://groups.google.com/d/optout.